<selector xmlns:android="http://schemas.android.com/apk/res/android">
    <item
        android:state_pressed="false"
        android:drawable="@drawable/btn_start_normal" />
    <item
        android:state_pressed="true"
        android:drawable="@drawable/btn_start_press" />
    <item
        android:drawable="@drawable/btn_start_normal" />
</selector>
